EN 1303
EN 1303
EN 1303 is a security rating .
Code Number
An 8-digit code is used to state the level of compliance. Each digit corresponds to a category and how the lock cylinder responded to testing.
Digit 1 - Category of use
One category is identified:
- Grade 1: Keys shall resist a torque of 2.5Nm and still be usable. This is for use by people with a high incentive to exercise care and with a small chance of misuse.
Digit 2 – Durability
Three grades of durability classify cylinders as either grade 4, 5, or 6 based on the number of test cycles achieved.
- Grade 4: 25,000 cycles.
- Grade 5: 50,000 cycles.
- Grade 6: 100,000 cycles.
Digit 3 – Door mass
- Grade 0 - No requirement.
Digit 4 – Fire resistance
Cylinders are classified as either grade 0 , A or B.
- Grade 0: Not approved for use on fire/smoke door assemblies.
- Grade A: Cylinders shall be subjected to a smoke test in accordance with EN 1634-3 or materials for the parts of the cylinder responsible for preventing any leakage of smoke shall have a melting point not less than 840 °C.
- Grade B: Cylinders shall be fire tested in accordance with current fire test requirements of EN 1634-1 or EN 1634-2 or materials for the parts of the cylinder responsible for preventing the spread of fire shall have a melting point not less than 300 °C.
Digit 5 – Safety
- Grade 0 - No requirement.
Digit 6 – Corrosion and temperature resistance
Cylinders are classified as either grade 0, A, B or C:
- Grade 0: No corrosion or temperature requirement.
- Grade A: High corrosion resistance, no temperature requirement.
- Grade B: No corrosion requirement, temperature requirement between - 25 °C and + 65 °C.
- Grade C: high corrosion resistance, temperature requirement between - 25 °C and + 65 °C.
Note: No distinction is made between the inside and the outside of either the cylinder and/or the door. On completion of the test, the cylinder must operate using a maximum 1.5 Nm torque on the key at both - 25 °C and + 65 °C.
Digit 7 – Key Security
Cylinders are classified in grades 1 to 6, where 6 is the highest. The grade of security can differ from one side of a double cylinder to the other. The table below provides a summary of the main security requirements.
| Requirement | Unit | Grades | |||||
|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||
| Min number of effective differs | Number | 100 | 300 | 15,000 | 30,000 | 30,000 | 100,000 |
| Min number of movable detainers | Number | 2 | 3 | 5 | 5 | 6 | 6 |
| Max number of idential | % | 100 | 70 | 60 | 60 | 60 | 50 |
| Max number of identical adjacent steps | Number | - | 2 | 2 | 2 | 2 | 2 |
| Direct coding on key | - | - | - | No | No | No | No |
| Operation of security mechanism (interpassing) torque | Nm | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
| Torque resistance of plug/cylinder | Nm | 2.5 | 5 | 15 | 15 | 15 | 15 |
Digit 8 – Attack resistance
Cylinders are classified grades 0 to 5 where 5 is the highest. The table below provides a summary of the main requirements.
References
